GB769383A - Improvements in or relating to manufacture of isopropyl benzene - Google Patents

Improvements in or relating to manufacture of isopropyl benzene

Info

Publication number
GB769383A
GB769383A GB14175/55A GB1417555A GB769383A GB 769383 A GB769383 A GB 769383A GB 14175/55 A GB14175/55 A GB 14175/55A GB 1417555 A GB1417555 A GB 1417555A GB 769383 A GB769383 A GB 769383A
Authority
GB
United Kingdom
Prior art keywords
temperature
water
catalyst
benzene
dehydrogenation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB14175/55A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Universal Oil Products Co
Original Assignee
Universal Oil Products Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Universal Oil Products Co filed Critical Universal Oil Products Co
Publication of GB769383A publication Critical patent/GB769383A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2/00—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms
    • C07C2/54—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition of unsaturated hydrocarbons to saturated hydrocarbons or to hydrocarbons containing a six-membered aromatic ring with no unsaturation outside the aromatic ring
    • C07C2/64—Addition to a carbon atom of a six-membered aromatic ring
    • C07C2/66—Catalytic processes
    • C07C2/70—Catalytic processes with acids
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2527/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • C07C2527/14—Phosphorus; Compounds thereof
    • C07C2527/16—Phosphorus; Compounds thereof containing oxygen
    • C07C2527/167—Phosphates or other compounds comprising the anion (PnO3n+1)(n+2)-
    • C07C2527/173—Phosphoric acid or other acids with the formula Hn+2PnO3n+1
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/582—Recycling of unreacted starting or intermediate materials

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Mono-isopropyl benzene is obtained by passing benzene and propylene in the molal range of 3 : 1 to 8 : 1 over a solid phosphoric acid alkylation catalyst at 204-206 DEG C. and a pressure of 25-60 atmospheres in the presence of a quantity of water within the limits of <FORM:0769383/IV(b)/1> when M is the mol. percentage of water, and t = temperature in degrees Centigrade of the steam entering the catalyst mass and P is the pressure in atmospheres. The water may be added as such to dry reactants, in the form of a controlled degree of moisture in the reactants themselves, or in the form of compounds which produce water during the reaction such as propyl alcohol. The benzene may be obtained from the distillation of coal, the dehydrogenation of naphthenic hydrocarbon fractions containing cyclohexane, and the dehydrogenation and cyclization of aliphatic hydrocarbons containing 6 carbon atoms per molecule in straight-chain arrangement, such as normal hexane and the straight-chain hexene. The catalyst may be made by mixing ortho-, pyro- or tetra-phosphoric acid with diatomaceous earth or clay and calcining at a temperature below 500 DEG C. and then grinding and sizing. Preferably the process is effected in 2 or more stages and the increase in temperature from inlet to outlet should not exceed 25 DEG C. preferably it should be less than 15 DEG C. A quenching liquid such as propane may be added between successive catalyst beds in order to regulate the rise in temperature.
GB14175/55A 1955-01-31 1955-05-17 Improvements in or relating to manufacture of isopropyl benzene Expired GB769383A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US769383XA 1955-01-31 1955-01-31

Publications (1)

Publication Number Publication Date
GB769383A true GB769383A (en) 1957-03-06

Family

ID=22135100

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14175/55A Expired GB769383A (en) 1955-01-31 1955-05-17 Improvements in or relating to manufacture of isopropyl benzene

Country Status (1)

Country Link
GB (1) GB769383A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3201486A (en) * 1960-12-19 1965-08-17 Universal Oil Prod Co Alkylation of alkylatable organic compounds

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3201486A (en) * 1960-12-19 1965-08-17 Universal Oil Prod Co Alkylation of alkylatable organic compounds

Similar Documents

Publication Publication Date Title
US3270085A (en) Method for isomerizing alpha olefins to beta olefins with chromium nickel phosphate
GB340513A (en) Improvements in the polymerisation of olefines
US2860173A (en) Manufacture of isopropyl benzene by alkylation
US2245143A (en) Treatment of olefin hydrocarbons
US2382318A (en) Alkylation of benzene
GB769383A (en) Improvements in or relating to manufacture of isopropyl benzene
US3709951A (en) Method of controlling an oxidative dehydrogenation
US2353832A (en) Catalytic conversion of hydrocarbons
US2435038A (en) Catalytic dealkylation of alkyl aromatic compounds
US2443732A (en) Dehydration of alkyl ketones
US2234177A (en) Conversion of olefin hydrocarbons
US2054270A (en) Production of phenolic compounds
US2184295A (en) Method for producing olefin-sulphur dioxide resins
US2387224A (en) Method for separating hydrocarbons and making mercaptans
US3169999A (en) Aromatic alkylation process utilizing a nickel-chromia-silica-alumina catalyst
SU136340A1 (en) Method for alkylation of benzene with diisopropylbenzene
SU121788A2 (en) The method of alkylation of aromatic hydrocarbons
US2390953A (en) Alkylation of aromatic hydrocarbons
GB1009555A (en) Production of xylene
SU138603A1 (en) The method of obtaining tertiary alcohols
US2973395A (en) Process of producing c3h4 aliphatic hydrocarbons and ethylene from propylene
US1964399A (en) Process for the conversion of unsaturated hydrocarbons such as acetylene into higher boiling products
US2420327A (en) Polymerization of hydrocarbons
SU128683A1 (en) Toxic chemicals
GB871278A (en) A process for the production of carboxylic acids